Airplane brake construction and the like



C. HOLLERITH AIRPLANE BRAKE CONSTRUCTION AND THE LIKE 2 Sheets-Sheet 1 Filed Feb. 14, 1940 [75m fizzy/m7 I 3% Ma March 24, 1942. c. HQLLERITH 2,277,434

' AIRPLANE BRAKE CONSTRUCTION AND THE LIKE Filed Feb. 14, 1940 2 Sheets-Sheet 2 40 U6 Z 2 I M/ J 'F/QQZ" latented 24, 1942 e a v UNITED STATES PATENT OFFICE v crimes Holleritm Jac hi ii. mica, lsslgnol' to Hayes Industries, Inc., JncksonyMlcln, a corporatlon of Michigan Application February 14, 1940, Serial No. 318,817- 1 cum. (Cl. 188-152).

The invention relates to improvements in expass to secure the connection 3i! to the rim 20 of pander tube brake assemblies. While the printhe spider H. The stem 28 of the expand r tube ciples herein disclosed are not confined to any 36 is held in fluid sealed relation with the conparticular field, brake assemblie embodying the nection 30 by the packing nut 38 in a well known present invention are especially well adapted to 5 manner. aircraft landing wheels. The channel rim 24 in which the expander One of the objects of the invention is to protube 36 is located is shown fabricated from two vide an expander tube assembly which is so sheet metal parts 42 and 44 each having a radial mounted upon thetcrque spider or its equivalent flange 6.6 which collectively'form the flange 48. as to enable the tube assembly to be readily l Circumferentially spaced about the rim 20 are mounted and demounted as a unit without rebolt holes 50 each having an enlarged portion moval of the brake spider from its mounting into which the knurled portions 52 of the nuts frame on the landing gear. 54 are press fitted and held against rotation. Another object is to provide an improved ex- Similarly located holes 5' in theflange 48 are pander tube assembly which may be mounted provided to enable the rim 2 to be mounted and and removed as an assembled unit from the demounted solely by manipulation of the bolt 58 brake torque spider. which are readily accessible with the wheel re- A further object is to provide an expander tube move from the xle I will pp fr 8- assembly which is removable as an assembled 2 that the rim 2! is pilo d t ill on the rim 2!! unit and has improved reinforcements in the re- 2 and that all the torque is taken on the unthreadgion of the tube stem. ed portion of the bolts 58 as at 63 and ii.

A still further object resides in providing an The brake assembly within the rin'ijlas shown improved manner of removably supporting the comprises brake blocks 62 held in position by re-' rim of an expander tube assembly from the tractor springs 65 extending between the rim torque spider or its equivalent. sides. In the event of needed repair or replace- These and other objects and advantages relatment of any part or all of the brake assembly,

ing to construction, arrangement and combine. this may be readily accomplished as follows: The

tion ofparts will hereinafter appear. wheel is first removed from the axle ll; next the In the drawings, braking fluid line (not shown) is disconnected Fig. 1 is a side elevatlonal view of the torque from the nipple l0 and the nipple assembly ll spider with brake and fairing attached and the unscrewed from the inlet connector 3| and the wheel removed, bolts II and II removed. The brake structure Fig. 2 is a sectional view taken on line 11-11 entirely assembled including the connection 3! o! Fig. 1, can now be removed from the spider", as a unit Fig. 3 is a perspective view of the inlet-connec- 88 for inspection. r p 1' r p a tt a Sim ar tion. and V assembly. I

Fig. 4 is a fragmentary plan view of a portion Those skilled in the art will appreciate that by of the torque spiden;

To simplify the disclosure, the wheel with brake struc re assembly and means of s p brake drum attached is shown removed from the which (I) pfi ent and removal of the axle H! of the landing gear. Th fairing I2 and brake tube and brake block and supporting structorque spider H are shown secured to the torque ture as a unit-without disassembling any part; flange It by bolts l8. In the illustrated form the (2) permits use of light metal rim for the exspider H is cast from a light alloy with a, rim pander'tube and brake blocks with adequate r portion 20 of'the cross-section showninthe lower inforcement adj ent tube stem, and (3) Droportion of Fig. 2 throughout its entire clrcumfer vides for suitable support for the expander tube the foregoing construction I have provided a' ence except for the ofiset reinforcing boss 22 rim and transfer of torque from rim t torque which gives added support to one side of the spider.

channel rim 25, adjacent the recess 26 in which Having described my invention, what I desire the tube stem 28 is located. The other side of 59 to secure by letters Patent and claim is: the rim 2% adjacent the recess 26 is reinforced 1. In a fluid brake assernbly, thecombination by the inlet connection 36 which extends through with a torque member having an opening th an opening 32 in the spider id. The portion 36' in adjacent its outer mriphery, ofa brake struc-- of the inlet connection 30 has a complementary ture comprising a. rim part, removable means for recess 26' and cars 33 through which bolts 36 securing said part to one side of said member and accessible for removal from the same side, a fluid inlet connection having an attachment portion located upon said side of said member and fixed thereto by removable means, and a portion of said inlet connection extending through said opening for removable connection to the brake fluid pressure line.

2. In a fluid brake assembly, the combination with a circular torque member having an opening and an oil-set peripheral portion adjacent said opening, of a brake structure comprising a rim part piloted upon the periphery of said member and having a radial flange disposed along said oil-set to form a complementary portion for the support of said rim, and removable means for connecting said rim part and said reinforcement portion to said side of said member.

3. In a fluid brake assembly, the combination with a circular torque plate, of a brake element supported from said plate comprising a circular channel shaped rim having the web of the rim piloted upon the 'periphery of said plate and having anattachment portion disposed to one side of said plate, removable means connecting said portion to said side of said plate, and a fluid connection depending inwardly from said rim and having clearance with said plate for lateral removal oi said connection and rim from said plate as a unit.

4. In a fluid brake assembly, the combination with a circular torque plate, of a brake element supported from said plate comprising a circular channel shaped rim having an attachment portion disposed to one side of said plate, means for removably connecting said portion to said side of said plate, a fluidconnection associated with said brake element, ands. slot in the periphery of said torque-plate through which said connection may pass upon lateral movement whereby said connection and brake element having clearance with said plate for mounting and demcunting by lateral movementas a unit. I

5. In combination, a torque member having a circular rim portion, an expander tube brake structure comprising a channel shaped rim with an expander tube and'brake element disposed within the channel thereof, a fluid tube connection extending through the web of said channel rim, an attachment flange extending radially inward from the web of said channel rim and disposed along one side of said torque member, the web of said channel rim adjacent said flange being piloted upon the periphery of said torque member, removable means for securing said flange to the side of said torque member, said flange and tube connection being all disposed upon the same side of said torque member so as to have clearance for the mounting and demounting by lateral movement of said rim and connection upon said torque member as an assembled unit.

6. In a fluid brake assembly, the combination with a torque member, of a channel shaped rim supported from said member carrying the brake element andlradial actuating means therefor, a fluid conduit extending through the web of said rim part, a portion of said torque member giving support to the web of said rim at one side of said conduit, and an inlet connection part coupled with said conduit and giving support to said web at the opposite side of said conduit, and means for connecting said part to said torque member.

7. In a fluid pressure operated brake assembly, the combination of a torque member in the form of a circular plate having a rim portion with an oiI-set and a lateral opening adjacent said offset, oi. a brake structure comprising a channel shaped circular member piloted upon said rim portion, an expander tube in said rim and having a conduit portion projecting into a recess defined by said ofl-set, an inlet connection-extending through said opening and coupled to said conduit with an oil-set portion thereof opposite said first off-set. said oil-set portions reinforcing said side of said torque member.

CHARLES HOLLERITH. 

